Ключевые слова: ancient, architecture, baltic, building, built, cannon, castle, cold, europe, exterior, finland, finnish, fort, fortification, fortress, frozen, gun, helsinki, heritage, historic, holiday, ice, island, landmark, landscape, main, military, old, outdoor, outdoors, outside, scandinavia, sea, site, sky, snow, stone, structure, suomenlinna, suomi, sveaborg, tourism, travel, wall, water, weapon, winter, world,